Débitmètre de cyanure DN65

1. Basic specifications

Model example: HHDLDBE (electromagnetic)

Type: electromagnetic flowmeter (no mechanical moving parts, leak-proof)

Applicable media: corrosive solutions such as sodium cyanide (NaCN) and potassium cyanide

(KCN) Nominal diameter: DN65 (65mm)

2. Performance parameters

paramètre	index
Flow range	7-70m ³/h (expandable)
Accuracy level	±0.5%
Medium conductivity	≥5μS/cm
Working pressure	≤ 1.6MPa (customizable high-pressure type)
medium temperature	-20 ℃~+120 ℃ (High temperature type optional)

3.Structural design

Electrode material:

Tantalum (Ta) or platinum-iridium alloy (strong corrosion resistance) Lining

material: PTFE (polytetrafluoroethylene) or PFA (resistant to acid, alkali and cyanide corrosion) Sealing method:

Double-end mechanical seal (leakage prevention)

Optional nitrogen purge interface (anti-crystallization blockage)

4.Safety and protection

Explosion-proof level: Ex dⅡ BT4 (suitable for flammable and explosive environments) Protection level: IP68 (fully waterproof and dustproof)

Monitoring function:

Electrode corrosion monitoring (early warning replacement)

Empty pipe detection (to prevent dry running damage)

5.Control and output

signal output:

-4-20mA + RS485 (Modbus protocol)

Optional HART communication (remote calibration)

Display mode:LCD backlight screen (instantaneous/accumulative flow, temperature, alarm status)

6.Installation requirements

Straight pipe section:5D in front, 2D in the back (D=pipe diameter)

Grounding: Must be independently grounded (anti-electromagnetic interference)

Avoid: strong magnetic field, vibration source Installation

Selection suggestions

1.High concentration of cyanide (≥20%):

Choose tantalum electrode + PTFE lining, which has stronger corrosion resistance.

2.Easy to crystallize working conditions:

Add electric heating or insulation layer (to maintain the fluidity of the medium).

3.Maintenance points:

Check the electrode wear every month

and calibrate the zero point every quarter (to ensure measurement accuracy)

If corrosion test report or explosion-proof certification documents are required, please consult the supplier to provide qualification documents for specific models.